Diseases
Brassica napus var. napus
A complex of seedling pathologies in rapeseed caused by soil-borne fungi Olpidium brassicae, Pythium spp., and Rhizoctonia spp. It is characterized by darkening, thinning, and softening of the hypocotyl, leading to lodging and death of seedlings.
In the reference 24 varieties crop Rapeseed, where this is mentioned in the description.
The disease affects rapeseed exclusively at the seedling stage. Necrotic lesions form in the root collar zone and on the hypocotyl, and the tissues soften and darken. This leads to stem thinning, lodging, and subsequent death of the plant. Secondary symptoms include yellowing of cotyledons, loss of turgor, and dieback of the root system, which causes stand thinning.
The pathogens of the disease are hemisaprophytic fungi Olpidium brassicae, as well as species of the genera Pythium and Rhizoctonia. It is important to distinguish this symptom complex from phoma stem canker, caused by Leptosphaeria maculans, as the latter is a distinct disease requiring different methods of resistance evaluation, including the use of specific genes, such as RLM7, which are not applied in the context of blackleg control.
General information about the subject — on the page Blackleg.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Brassica napus var. napus · Rapeseed
Pioneer Overseas Corporation US (USA)
Brassica napus var. napus · Rapeseed
STRINGAM| Dr. Gary R. Stringam c/o Department of Agricultural Food and Nutritional Science, / DEGENHARDT| Delbert F. Degenhardt c/o Department of Agricultural Food and Nutritional Science,
Brassica napus var. napus · Rapeseed
Advanta Semillas S.A.I.C., Pacífic Seeds Pty. Ltd.
Brassica napus var. napus · Rapeseed
Nelly Guguin, Jean-Pierre Despeghel,
Brassica napus var. napus · Rapeseed
Monsanto Technology LLC (SAD)
Brassica napus var. napus · Rapeseed
MONSANTO SAS IMMEUBLE EL YSEES LA DEFENSE
Brassica napus var. napus · Rapeseed
Ministry of Agriculture
Brassica napus var. napus · Rapeseed
Andrew Easton
Brassica napus var. napus · Rapeseed
Nelly Guguin, Jean-Pierre Despeghel,
Brassica napus var. napus · Rapeseed
Semences Cargill SA (FR)
Brassica napus var. napus · Rapeseed
LIDEA FRANCE SAS
Brassica napus var. napus · Rapeseed
Rene Baratin
Brassica napus var. napus · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Brassica napus var. napus · Rapeseed
Sandrine LEGROS
Brassica napus var. napus · Rapeseed
Semences Cargill SA (FR)
Brassica napus var. napus · Rapeseed
HANS SVENSK, C/O SVALÖF WEIBULL AB
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Ringot (FR)
Brassica napus var. napus · Rapeseed
Monsanto Technology LLC, US
Brassica napus var. napus · Rapeseed
NSW DEPARTMENT OF AGRICULTURE
Brassica napus var. napus · Rapeseed
NSW DEPARTMENT OF AGRICULTURE
Brassica napus var. napus · Rapeseed
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Brassica napus var. napus · Rapeseed
MONSANTO TECHNOLOGY
Brassica napus var. napus · Rapeseed
Breus Oksana Serhiivna, Davydiuk Ihor Mykolaiovych, Koval`chuk Zoreslava Volodymyrivna, Parii IUliia Oleksandrivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,